Pokémon may not hold the vice-like grip on the nation's pre-teens that it once did, but the franchise remains both hugely popular and wholly incomprehensible to anyone outside the target audience. The latest two games mark the series' debut on the Nintendo DS. And while the graphics and sound have been spruced up, the main benefit is online play, complete with trading and combat. The basic gameplay - capture Pokémon while exploring a 2D world - is as compulsive as ever. The combat is deceptively simple - essentially paper, scissors, stone - but strategy does play a part. Despite the cartoons, cuddly toys and Pikachu pencil cases, the heart of Pokémon is found in the games. The formula remains invigorating and fans will have no complaints. The inclusion of online makes Diamond and Pearl more interesting to older players and helps make them the best Pokémon releases to date.